A good app if you know how to set it up – MusicSoft Manager Review

I initially gave the app one star since it didn't work for me. However, finally I understood its modus operandi. First of all, if the app doesn't seem to work for you and your instrument has two USB ports, try to insert your wifi adapter into a different USB port. That solved part of the problem for me: the app started to "see" files on the instrument. To find copied files in your Dropbox you'll need to locate the "Apps" folder. Inside the "Apps" folder you'll see a folder named "MusicSoftManager" - that's the one you need.
Review by RealCyril on MusicSoft Manager.